How to Be a Sister: A Love Story with a Twist of Autism

Eileen Garvin's older sister, Margaret, was diagnosed with severe autism at age three. Growing up alongside Margaret wasn't easy: Eileen often found herself in situations that were simultaneously awkward, hilarious, and heartbreaking. For example, losing a blue plastic hairbrush could leave Margaret inconsolable for hours, and a quiet Sunday Mass might provoke an outburst of laughter, swearing, or dancing.

How to Be a Sister begins when Eileen, after several years in New Mexico, …